Extension-plane.



PATENTED OCT. 22. 1907.

J; v." PETRUSIGH. EXTENSION PLANE.

AIPLIQATION FILED JUNE 17, 1907.

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PATENTED OCT. 22. 1907.

a No. 869,016.

J. v; PETRUSIGH. EXTENSION PLANE. APPLICATION FILED JUNE 17.1907- 3snnsws-sniznw 2.

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' PATENTED OCT. 22. 1'907. J. V. PETRUSIUH. EXTENSION PLANE.

{APPLICATION FILED JUNE 17. 1907.

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JOHN V. PETRUSIOH, OF CHICAGO, ILLINOIS.

EXTENSION-PLANE.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed June 1'7, 1907. gerial No. 379,311.

To all whom it may concern:

Be it known that I, JOHN V. PETRUsicn, a citizen of the United States,residing at Chicago, in the county of (look and State of Illinois, haveinvented a new and useful Extension-Plane, of which the following is aspecification.

This invention relates to improvements in planes.

It is well known that carpenters and others using this class of toolfind occasion to use several sizes of the same and the object of thisinvention is to provide what may be termed an extension plane or a planein which the several essential sizes of the tool are combined in one.

With this and other objects in view the invention.

consists in the construction and combination of parts to be hereinafterdescribed, pointed out and claimed in the following specification andillustrated in the accompanying drawings, in whichz- Figure 1 is a sideelevation of the device complete. Fig. 2 is a detail of a slotted barand pin therefor used for locking the extension members. Fig. 3 is aview similar to Fig. 1 showing in dotted lines the position of theextension members when the plane is closed. Fig. 4 is an end of thedevice partly in section and taken on line dd Fig. 9. Fig. 5 is a viewin section of Fig. 4 taken on line a a. Fig. 6 is a detail perspectiveof the rack employed in the extension portion of the device. Fig. '7 isa plan view of the plane closed. Fig. 8 is a front view of Fig. 7,partly in section, and taken on the line 5-1). Fig. 9 is a section takenon line 0-0 of Fig. 7.

Like reference characters indicate corresponding parts throughout theseveral views.

The reference .numeral 2 represents a plane of ordinary or preferredconstruction having longitudinal sockets 2 opening in either extremityof the side walls 2 of the plane and running horizontally and parallelwith each other as shown in Fig. 3.

The numeral 3 represents extension rods adapted to fit slidably into thesockets 2 and having graduations 4 on their lateral surfaces formeasuring off the work. Roller-carriers 7 are provided at the externalextremities of the extension rods as shown in section in Fig. 4 and asshown complete in Fig. 1, in which are pivoted the rollers 8 for thepurpose of carrying the plane smoothly over the work. A brace 6 connectseither pair of roller-carriers as shown in Fig. 7 for the purpose ofholding the extension rods rigidly parallel.

Either roller-carrier arranged on either left-hand extension rod isrecessed on the surface adjacent the roller so that it may carry a rack10 provided with a slot 11 which engages the pivot of the roller Si Eachleft-. hand roller-carrier is fmther provided with a worm 9 whichengages the rack 10 for the purpose of raising and lowering the same asshown in detail in Figs. 4 and 5. When the rack 10 is dropped below theleft-hand edge of the work it serves as a lateral drop guide to keep theplane flush with that edge of the work as shown in Fig. 1.

12 represents a knob of the plane provided with a screw 13 running theentire length of the same and protruding beyond the lower extremitythereof.

14 represents the upper section of a clamp slidably arranged on theextension rods and provided with a threaded aperture to receive thescrew 13 protruding from the knob 12 which is seated on said portion ofthe clampv 14 is the lower section of the clamp arranged on theextension rods in a manner similar to the upper portion and providedwith a threaded aperture to receive the screw 13 that extends throughthe upper portion of the clamp. By turning the knob 12 to the right thesections of the clamp 14 and 14 are drawn together and are caused togrip the extension rods firmly thus affording rigid handles to theplane.

1515 represents a pair of slotted bars arranged on the side walls of theplane by means of the screws 16 movable with said bars. The screws 16extend vertically through the side walls of the plane to the sockets 2and when the slotted bars are turned at right angles with the side wallsof the plane the screws 16 engage the extension rods resting within thesaid sockets and hold them firmly.

17 represents a horizontal connecting link pivoted at 18 and engagingthe slotted bars 15 in the manner shown in Fig. 7. By turning thishorizontal link until it lies in a straight angle with the two slottedbars it will cause the screws 16 to engage the extension rods as abovedescribed. Thus it will be seen, the extension rods can be partlywithdrawn from their sockets and locked in that position.

Either end of the plane is provided with similar extension apparatus andhence a description of that on one end is a description of the apparatuson the other.

Having fully described my invention, what I wish to claim and secure byLetters Patent of the United States is:

1. In a plane, extension means journaled in the side walls thereof, asliding clamp mounted on said extensionmeans, a knob seated on saidsliding clamp and support ing means terminally carried by said extensionmeans substantially as described.

2. In a plane, extension means journaled in the side walls thereof, anextension stop carried on the side walls thereof, a sliding clampmounted on said extension means, a knob seated on said sliding clamp,roller-carriers terminally arranged on said extension means. a rollerpivoted within said roller-carriers and a lateral drop guide carried bysaid roller-carrier substantially as described.

3. In combination with a plane having longitudinal sockets in the sidewalls thereof, sliding extension rods arranged therein, a slidingscrew-actuated clamp arranged on said extension rods, a knob seated onsaid clamp by which the same may be anchored or released, rollercarriersterminally carried by said extension rods, a roller pivotally carried bysaid roller carriers, a brace 6 connecting said r0llercarriers and aworm and rack carried by said roller carriers substantially asdescribed. In testimon that I claim the foregoing as my own, I havehereto afiixed my signature in the presence of two witnesses.

.TOT'IN V. PETRUSICII.

Witnesses:

Rosn Gnnnxnnnc, FREDERICK RINDLER.

